Section 16 Clock Pulse Generator (CPG)
Rev. 1.00 Oct. 01, 2007 Page 635 of 1956
REJ09B0256-0100
The functions of the blocks in the CPG are as follows.
(1) PLL
Circuit
1
PLL circuit 1 multiples the frequency of the crystal oscillator or the clock input from the EXTAL
pin by the ratio of
×
16. The multiplication ratio is selected by the combination of mode control
pins MD0, MD1, and MD2.
(2) PLL
Circuit
2
PLL circuit 2 aligns the phases of the bus clock (Bck) and the clock signal output from the
CLKOUT pin that is used by the external peripheral interface.
(3) Crystal
Oscillator
The crystal oscillator is a clock pulse generator used when a crystal resonator is connected to the
XTAL or EXTAL pin. The crystal oscillator can be enabled by the MD8 pin setting.
(4) Divider
1
Divider 1 generates the CPU clock (Ick), SHwy clock (SHck), peripheral module clocks (Pck0,
Pck1), and bus clock (Bck). The division ratio is selected by the combination of mode control pins
MD0, MD1, and MD2.
(5) Frequency Control Register (FRQCR)
The frequency control register is a read-only register that depends on the combination of mode
control pins MD0, MD1, and MD2.
(6) PLL
Circuit
3
PLL circuit 3 multiples the frequency of the SHwy clock (SHck) by the ratio of
×
4.
(7) Divider
2
Divider 2 generates the DDR-memory clocks (DDRck0, DDRck90, DDRck180, and DDRck270).
(8) PLL Control Register (PLLCR)
The PLL control register has control bits assigned for enabling or disabling the CLKOUT pin
output.
Содержание SH7763
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Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
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Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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